Merge pull request #881 from technosophos/feature/docker-go151

Change Dockerfile to use smaller distro, non-root user, and Go 1.5.1

Dockerfile

@@ -1,14 +1,17 @@
-
-FROM ubuntu:14.04
+FROM ubuntu-debootstrap:14.04
 
 MAINTAINER Minio Community
 
-ENV GOLANG_TARBALL go1.5.linux-amd64.tar.gz
+ENV GOLANG_TARBALL go1.5.1.linux-amd64.tar.gz
 
 ENV GOROOT /usr/local/go/
 ENV GOPATH /go-workspace
 ENV PATH ${GOROOT}/bin:${GOPATH}/bin/:$PATH
 
+ENV MINIOHOME /home/minio
+ENV MINIOUSER minio
+RUN useradd -m -d $MINIOHOME $MINIOUSER
+
 RUN apt-get update -y && apt-get install -y -q \
 		curl \
 		git \
@@ -29,6 +32,8 @@ RUN apt-get remove -y build-essential curl git && \
         apt-get -y autoremove && \
         rm -rf /var/lib/apt/lists/*
 
+USER minio
+
 EXPOSE 9000 9001
 
 CMD ["sh", "-c", "${GOPATH}/bin/minio server"]